Finding the Fourth Proportional to 811,195.86, 1,215,935.74 and 305,538.06
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Solution
The fourth proportional to 811,195.86, 1,215,935.74 and 305,538.06 is: 457,983.90
Step by Step Solution
- Step 1: Write the proportion equation
811,195.86 : 1,215,935.74 = 305,538.06 : x - Step 2: Convert to fraction form
811,195.86/1,215,935.74 = 305,538.06/x - Step 3: Cross multiply
811,195.86x = 1,215,935.74 × 305,538.06 - Step 4: Simplify right side
811,195.86x = 371,514,647,084.26 - Step 5: Solve for x
x = 371,514,647,084.26/811,195.86 - Step 6: Final answer
x = 457,983.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.